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Overview
Comment: | Performance improvement in sqlite3_step() by creating a new mTrace flag for the legacy xProfile pointer that is set by sqlite3_profile(). |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA3-256: |
e28584e8bc7b7405380064b60523fa61 |
User & Date: | drh 2018-12-04 14:33:02.434 |
Context
2018-12-04
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16:51 | Add the "index_usage" utility program. (check-in: df95455213 user: drh tags: trunk) | |
14:33 | Performance improvement in sqlite3_step() by creating a new mTrace flag for the legacy xProfile pointer that is set by sqlite3_profile(). (check-in: e28584e8bc user: drh tags: trunk) | |
13:51 | Small performance increase in sqlite3_step() for the common case where it returns SQLITE_ROW. (check-in: 8934482652 user: drh tags: trunk) | |
Changes
Changes to src/main.c.
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1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 | (void)SQLITE_MISUSE_BKPT; return 0; } #endif sqlite3_mutex_enter(db->mutex); pOld = db->pTraceArg; db->mTrace = xTrace ? SQLITE_TRACE_LEGACY : 0; db->xTrace = (int(*)(u32,void*,void*,void*))xTrace; db->pTraceArg = pArg; sqlite3_mutex_leave(db->mutex); return pOld; } #endif /* SQLITE_OMIT_DEPRECATED */ | > | 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 | (void)SQLITE_MISUSE_BKPT; return 0; } #endif sqlite3_mutex_enter(db->mutex); pOld = db->pTraceArg; db->mTrace = xTrace ? SQLITE_TRACE_LEGACY : 0; if( db->xProfile ) db->mTrace |= SQLITE_TRACE_XPROFILE; db->xTrace = (int(*)(u32,void*,void*,void*))xTrace; db->pTraceArg = pArg; sqlite3_mutex_leave(db->mutex); return pOld; } #endif /* SQLITE_OMIT_DEPRECATED */ |
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2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 | return SQLITE_MISUSE_BKPT; } #endif sqlite3_mutex_enter(db->mutex); if( mTrace==0 ) xTrace = 0; if( xTrace==0 ) mTrace = 0; db->mTrace = mTrace; db->xTrace = xTrace; db->pTraceArg = pArg; sqlite3_mutex_leave(db->mutex); return SQLITE_OK; } #ifndef SQLITE_OMIT_DEPRECATED | > > > | 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 | return SQLITE_MISUSE_BKPT; } #endif sqlite3_mutex_enter(db->mutex); if( mTrace==0 ) xTrace = 0; if( xTrace==0 ) mTrace = 0; db->mTrace = mTrace; #ifndef SQLITE_OMIT_DEPRECATED if( db->xProfile ) db->mTrace |= SQLITE_TRACE_XPROFILE; #endif db->xTrace = xTrace; db->pTraceArg = pArg; sqlite3_mutex_leave(db->mutex); return SQLITE_OK; } #ifndef SQLITE_OMIT_DEPRECATED |
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2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 | return 0; } #endif sqlite3_mutex_enter(db->mutex); pOld = db->pProfileArg; db->xProfile = xProfile; db->pProfileArg = pArg; sqlite3_mutex_leave(db->mutex); return pOld; } #endif /* SQLITE_OMIT_DEPRECATED */ #endif /* SQLITE_OMIT_TRACE */ /* | > > | 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 | return 0; } #endif sqlite3_mutex_enter(db->mutex); pOld = db->pProfileArg; db->xProfile = xProfile; db->pProfileArg = pArg; db->mTrace &= SQLITE_TRACE_NONLEGACY_MASK; if( db->xProfile ) db->mTrace |= SQLITE_TRACE_XPROFILE; sqlite3_mutex_leave(db->mutex); return pOld; } #endif /* SQLITE_OMIT_DEPRECATED */ #endif /* SQLITE_OMIT_TRACE */ /* |
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Changes to src/sqliteInt.h.
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1352 1353 1354 1355 1356 1357 1358 | const char*); #endif #ifndef SQLITE_OMIT_DEPRECATED /* This is an extra SQLITE_TRACE macro that indicates "legacy" tracing ** in the style of sqlite3_trace() */ | | > | > > | 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 | const char*); #endif #ifndef SQLITE_OMIT_DEPRECATED /* This is an extra SQLITE_TRACE macro that indicates "legacy" tracing ** in the style of sqlite3_trace() */ #define SQLITE_TRACE_LEGACY 0x40 /* Use the legacy xTrace */ #define SQLITE_TRACE_XPROFILE 0x80 /* Use the legacy xProfile */ #else #define SQLITE_TRACE_LEGACY 0 #define SQLITE_TRACE_XPROFILE 0 #endif /* SQLITE_OMIT_DEPRECATED */ #define SQLITE_TRACE_NONLEGACY_MASK 0x0f /* Normal flags */ /* ** Each database connection is an instance of the following structure. */ struct sqlite3 { sqlite3_vfs *pVfs; /* OS Interface */ |
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1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 | int nVdbeWrite; /* Number of active VDBEs that read and write */ int nVdbeExec; /* Number of nested calls to VdbeExec() */ int nVDestroy; /* Number of active OP_VDestroy operations */ int nExtension; /* Number of loaded extensions */ void **aExtension; /* Array of shared library handles */ int (*xTrace)(u32,void*,void*,void*); /* Trace function */ void *pTraceArg; /* Argument to the trace function */ void (*xProfile)(void*,const char*,u64); /* Profiling function */ void *pProfileArg; /* Argument to profile function */ void *pCommitArg; /* Argument to xCommitCallback() */ int (*xCommitCallback)(void*); /* Invoked at every commit. */ void *pRollbackArg; /* Argument to xRollbackCallback() */ void (*xRollbackCallback)(void*); /* Invoked at every commit. */ void *pUpdateArg; void (*xUpdateCallback)(void*,int, const char*,const char*,sqlite_int64); #ifdef SQLITE_ENABLE_PREUPDATE_HOOK | > > | 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 | int nVdbeWrite; /* Number of active VDBEs that read and write */ int nVdbeExec; /* Number of nested calls to VdbeExec() */ int nVDestroy; /* Number of active OP_VDestroy operations */ int nExtension; /* Number of loaded extensions */ void **aExtension; /* Array of shared library handles */ int (*xTrace)(u32,void*,void*,void*); /* Trace function */ void *pTraceArg; /* Argument to the trace function */ #ifndef SQLITE_OMIT_DEPRECATED void (*xProfile)(void*,const char*,u64); /* Profiling function */ void *pProfileArg; /* Argument to profile function */ #endif void *pCommitArg; /* Argument to xCommitCallback() */ int (*xCommitCallback)(void*); /* Invoked at every commit. */ void *pRollbackArg; /* Argument to xRollbackCallback() */ void (*xRollbackCallback)(void*); /* Invoked at every commit. */ void *pUpdateArg; void (*xUpdateCallback)(void*,int, const char*,const char*,sqlite_int64); #ifdef SQLITE_ENABLE_PREUPDATE_HOOK |
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Changes to src/vdbeapi.c.
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58 59 60 61 62 63 64 | ** Invoke the profile callback. This routine is only called if we already ** know that the profile callback is defined and needs to be invoked. */ static SQLITE_NOINLINE void invokeProfileCallback(sqlite3 *db, Vdbe *p){ sqlite3_int64 iNow; sqlite3_int64 iElapse; assert( p->startTime>0 ); | | > > | 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 | ** Invoke the profile callback. This routine is only called if we already ** know that the profile callback is defined and needs to be invoked. */ static SQLITE_NOINLINE void invokeProfileCallback(sqlite3 *db, Vdbe *p){ sqlite3_int64 iNow; sqlite3_int64 iElapse; assert( p->startTime>0 ); assert( (db->mTrace & (SQLITE_TRACE_PROFILE|SQLITE_TRACE_XPROFILE))!=0 ); assert( db->init.busy==0 ); assert( p->zSql!=0 ); sqlite3OsCurrentTimeInt64(db->pVfs, &iNow); iElapse = (iNow - p->startTime)*1000000; #ifndef SQLITE_OMIT_DEPRECATED if( db->xProfile ){ db->xProfile(db->pProfileArg, p->zSql, iElapse); } #endif if( db->mTrace & SQLITE_TRACE_PROFILE ){ db->xTrace(SQLITE_TRACE_PROFILE, db->pTraceArg, p, (void*)&iElapse); } p->startTime = 0; } /* ** The checkProfileCallback(DB,P) macro checks to see if a profile callback |
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598 599 600 601 602 603 604 | } assert( db->nVdbeWrite>0 || db->autoCommit==0 || (db->nDeferredCons==0 && db->nDeferredImmCons==0) ); #ifndef SQLITE_OMIT_TRACE | | | 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 | } assert( db->nVdbeWrite>0 || db->autoCommit==0 || (db->nDeferredCons==0 && db->nDeferredImmCons==0) ); #ifndef SQLITE_OMIT_TRACE if( (db->mTrace & (SQLITE_TRACE_PROFILE|SQLITE_TRACE_XPROFILE))!=0 && !db->init.busy && p->zSql ){ sqlite3OsCurrentTimeInt64(db->pVfs, &p->startTime); }else{ assert( p->startTime==0 ); } #endif |
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